Registration Dossier
Registration Dossier
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EC number: 221-897-7 | CAS number: 3271-76-9
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
- Endpoint:
- biodegradation in water: screening test, other
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 1977
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- - Principle of test: Biochemical oxygen demand determined after 5 d at 20°C inoculation
- Parameters analysed / observed: oxygen content at 0 h and after 5 d inoculation - GLP compliance:
- no
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, industrial (adaptation not specified)
- Duration of test (contact time):
- 5 d
- Parameter:
- % degradation (O2 consumption)
- Remarks on result:
- other: BOD5
- Parameter:
- BOD5
- Value:
- 31 mg O2/g test mat.
- Parameter:
- COD
- Value:
- 1 524 mg O2/g test mat.
- Validity criteria fulfilled:
- not applicable
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- The BSB5/COD ratio is 0.02. The substance is not considered to be biodegradable at all.
- Endpoint:
- biodegradation in water: screening test, other
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 1977
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- - Principle of test: Biochemical oxygen demand determined after 5 d at 20°C inoculation
- Parameters analysed / observed: oxygen content at 0 h and after 5 d inoculation - GLP compliance:
- no
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, industrial (adaptation not specified)
- Duration of test (contact time):
- 5 d
- Parameter:
- % degradation (O2 consumption)
- Remarks on result:
- other: BOD5
- Parameter:
- BOD5
- Value:
- 132 mg O2/g test mat.
- Parameter:
- COD
- Value:
- 956 mg O2/g test mat.
- Validity criteria fulfilled:
- not applicable
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- The BSB5/COD ratio is 0.14. The substance is not considered to be biodegradable at all.
Referenceopen allclose all
Description of key information
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
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